Quarterly report pursuant to Section 13 or 15(d)

REVENUE RECOGNITION (Deferred Revenue) (Details)

v3.21.1
REVENUE RECOGNITION (Deferred Revenue) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Deferred Revenue Arrangement [Line Items]        
Deferred revenue, current $ 1,817,328   $ 1,839,323 $ 1,400,000
Recognition of deferred revenue $ 47,828 $ 292,532    
Percentage of deferred revenue at December 31, 2020 expected to be recognized in 2021 and remaining deferred revenue 68.20%      
Percentage of deferred revenue at December 31, 2020 that has been or will be refunded to fans, and reclassified to accrued expenses if not already refunded. 4.60%      
Deferred Revenue, Noncurrent $ 294,100   $ 88,600  
Concerts [Member]        
Deferred Revenue Arrangement [Line Items]        
Recognition of deferred revenue 37,824 260,859    
Ticketing [Member]        
Deferred Revenue Arrangement [Line Items]        
Recognition of deferred revenue 4,421 16,708    
Sponsorship and Advertising [Member]        
Deferred Revenue Arrangement [Line Items]        
Recognition of deferred revenue 5,583 13,490    
Other and Corporate [Member]        
Deferred Revenue Arrangement [Line Items]        
Recognition of deferred revenue $ 0 $ 1,475